Note 4 - Summary of Significant Accounting Policies (Details) - Property and Equipment	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	5 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	40 years	40 years
Mining Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	2 years
Mining Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	7 years	7 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	7 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life	5 years